Professor Dan Ariely holds PhDs in cognitive psychology and business administration from Duke University, but he views himself, first and foremost, as a behavioral economist. In other words, he studies how psychology affects the economic decisions of individuals and institutions. In addition to his empirical research on the topic, Ariely also writes about it in plain language on his web page. Here readers will find a blog, which often features answers to readers' questions ("Ask Ariely") and has also addressed such topics as irrationality, regulating risk, emotional actions, and fun foods, among other topics. There are also a number of videos featuring Ariely as he takes on the assumptions of traditional economics and explains, often humorously, his own view of how people make decisions. For readers who like more depth, the Research tab also features a selection of Ariely's published research, some of which can be read for free online, and some of which is stored behind a paywall.